★改变词类的前缀 a 加在名词前构成形容词或副词: asleep aboard aside ashore ablaze be-加在名词或形容词前构成动词: belittle befriend behead bewitch bedim em-加在名词等前构成动词: embark embed embody empower embitter en-加在名词或形容词前构成动词: endanger encourage enrage enforce enslave enrich enlarge enable ■Out-加在名词或形容词前构成动词: outflank outnumber outpace outplay outsmart outwit outrank outclass
★ 改变词类的前缀 ◼ a- 加在名词前构成形容词或副词： asleep aboard aside ashore ablaze ◼ be- 加在名词或形容词前构成动词： belittle befriend behead bewitch bedim ◼ em- 加在名词等前构成动词： embark embed embody empower embitter ◼ en- 加在名词或形容词前构成动词： endanger encourage enrage enforce enslave enrich enlarge enable ◼ out- 加在名词或形容词前构成动词： outflank outnumber outpace outplay outsmart outwit outrank outclass
构成反义词的前缀 de-(F.. de-emphasize decentralize demilitarize demobilize declassify dehydrate djs-(不 构成动词: disappear disobey disapprove disagree dislike displease distrust disbelieve disarm 构成名词: discontent dishonor discomfort disobedience ■构成形容词: disloyal dishonest disinterested discourteous dissimilar j/- llegal illogical illiterat m impatient impolite impossible immature incapable informal inadequate independent inability injustice inadequacy insecurity irresolute irresponsible irresistible irregular non-(E) non-essential non-economic non-violent non competitive non-smoker non-profit non-resident
构成反义词的前缀： ◼ de- ( 非 ……) de-emphasize decentralize demilitarize demobilize declassify dehydrate ◼ dis- (不……) 构成动词： disappear disobey disapprove disagree dislike displease distrust disbelieve disarm 构成名词： discontent dishonor discomfort disobedience ◼ 构 成 形 容 词 : disloyal dishonest disinterested discourteous dissimilar ◼ il- illegal illogical illiterate ◼ im- impatient impolite impossible immature ◼ in- incapable informal inadequate independent inability injustice ◼ inadequacy insecurity ◼ ir- irresolute irresponsible irresistible irregular ◼ non- （非） non-essential non-economic non-violent noncompetitive non-smoker non-profit non-resident